Sensitivity of Class SA to Prepayments Assumed Price 4.796875%* PSA Prepayment Assumption Rates LIBOR 100% 295% 350% 600% 4.13%................................................ 47.8% 38.4% 35.7% 23.2% 5.13%................................................ 23.5% 13.3% 10.3%   (3.6)% 6.13%................................................          (1.3)%   (12.6)%   (15.8)%   (31.6)% 6.50% and above............................ ** ** ** ** SECURITY GROUP 2 Sensitivity of Class SC to Prepayments Assumed Price 5.078125%* PSA Prepayment Assumption Rates LIBOR 100% 350% 500% 700% 3.9975%  .......................................... 47.1% 33.6% 25.2% 13.5% 4.9975%  .......................................... 24.3% 10.2% 1.3%   (11.1)% 5.9975%  .......................................... 1.4%   (13.5)%   (23.0)%   (36.5)% 6.5000% and above  ...................... ** ** ** ** SECURITY GROUP 3 Sensitivity of Class DI to Prepayments Assumed Price 0.09375%* PSA Prepayment Assumption Rates LIBOR 100% 295% 350% 600% 6.470% and below ........................ 27.6% 17.4% 14.5% 0.9% 6.485%  ............................................ 9.1%   (1.8)%   (4.9)%   (19.9)% 6.500% and above  ........................ ** ** ** ** *    The price does not include accrued interest. Accrued interest has been added to the price in calculating the yields set forth in the table. **  Indicates that investors will suffer a loss of virtually all of their investment. S-34